Update increasing-staking.adoc (#1415)

Bug fix:
I removed the wrong bullet point in the prerequisites.

Author: natan-granit

components/Starknet/modules/staking/pages/increasing-staking.adoc

@@ -8,7 +8,6 @@ The staking and pooling contracts allow validators and delegators to increase th
 .Prerequisites
 
 * Sufficient STRK token balance in your Starknet wallet.
-* The validator/delegator must not be in an unstake/undelegate process.
 * The caller must be either the validator/delegator or their respective reward address.
 
 .Procedure